James WALKER
🏢 View company profile →6Patents
2Active
6Granted
33Portfolio score
Filing activity: May 9, 1984 → Sep 24, 2009 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9261195B2 | Energised seal | Mechanical Engineering; Lighting; Heating | 24 | Active |
| US4890849A | Shaft seals | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4624880A | Shaped article of composition comprising thermoplastic synthetic resin and cellular material and method of producing same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6578647B2 | Sealing structure for a rock drill bit | Fixed Constructions | 7 | Expired |
| US6357540B1 | Rotary drill bit with lip seal in roller cone bit | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8998174B2 | Diaphragm for a valve | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.